Class: Grid

Inherits:
Object
  • Object
show all
Defined in:
lib/rcrossword/grid.rb

Instance Method Summary collapse

Constructor Details

#initialize(width, height) ⇒ Grid

Returns a new instance of Grid.



2
3
4
5
6
7
8
9
 
# File 'lib/rcrossword/grid.rb', line 2

def initialize(width,height)
  @width = width
  @height = height
  @matrix = Array.new(height+1)
  for i in 1..@height
    @matrix[i] = "."*(@width+1)
  end
end

Instance Method Details

#cell(line, column) ⇒ Object

returns the content of one cell



17
18
19
20
21
22
23
 
# File 'lib/rcrossword/grid.rb', line 17

def cell(line,column)
  if column >= 1 and column <= @width
    self.line(line)[column-1..column-1]
  else
    nil
  end
end

#insert(line, column, orientation, word) ⇒ Object

inserts a word. orientation is either :horizontal or :vertical

Raises:

  • (ArgumentError) 


69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
 
# File 'lib/rcrossword/grid.rb', line 69

def insert(line,column,orientation,word)
  raise ArgumentError if orientation != :horizontal and orientation != :vertical
  l = line
  c = column
  if ! insert_possible?(l,c,orientation,word)
    #puts "cannot insert #{word}"
    return false
  end
  self.set(l,c,'#') # explanation cell
  l += 1 if orientation == :vertical
  c += 1 if orientation == :horizontal
  for pos in 0...word.size
    # Kollision?
    if cell(l,c) != '.' and cell(l,c) != word[pos..pos].upcase
      return false
    end
    self.set(l,c,word[pos..pos].upcase)
    l += 1 if orientation == :vertical
    c += 1 if orientation == :horizontal
  end
  if orientation == :horizontal and c <= @width
    if cell(l,c) != '#'
      self.set(l,c,'/')
    end
  end
  if orientation == :vertical and l <= @height
    if cell(l,c) != '#'
      self.set(l,c,'/')
    end
  end
  true
end

#insert_possible?(line, column, orientation, word) ⇒ Boolean

Returns:

  • (Boolean)

Raises:

  • (ArgumentError) 


35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
 
# File 'lib/rcrossword/grid.rb', line 35

def insert_possible?(line,column,orientation,word)
  raise ArgumentError if orientation != :horizontal and orientation != :vertical
  l = line
  c = column
  if cell(l,c) != '.'
    return false
  end
  l += 1 if orientation == :vertical
  c += 1 if orientation == :horizontal
  for pos in 0...word.size
    # Kollision?
    if cell(l,c) != '.' and cell(l,c) != word[pos..pos].upcase
      return false
    end
    #self.set(l,c,word[pos..pos].upcase)
    l += 1 if orientation == :vertical
    c += 1 if orientation == :horizontal
  end
  # danach entweder Erklaerungszelle oder Stopzelle oder schon letzte Position im Grid
  if orientation == :horizontal and c > @width
    #OK
  elsif orientation == :vertical and l > @height
    #OK
  else
    if cell(l,c) == '#' or cell(l,c) == '/' or cell(l,c) == '.'
      #OK
    else
      return false
    end
  end
  true
end

#line(n) ⇒ Object

returns the content of one line



12
13
14
 
# File 'lib/rcrossword/grid.rb', line 12

def line(n)
  @matrix[n][1..-1]
end

#set(line, column, character) ⇒ Object

sets one cell with a character



26
27
28
29
30
31
32
33
 
# File 'lib/rcrossword/grid.rb', line 26

def set(line,column,character)
  begin
    @matrix[line][column] = character
  rescue NoMethodError
    puts "Fehler: line #{line}, column #{column}, character #{character}"
    raise
  end
end

#to_s ⇒ Object

returns an ASCII representation of the matrix



103
104
105
106
107
108
109
 
# File 'lib/rcrossword/grid.rb', line 103

def to_s
  result = ''
  for line in 1..@height
    result << self.line(line)+"\n"
  end
  result
end